A BLE enabled UV light level measurement device which sends the notification to mobile device once the certain threshold is exceeded. This was a two phase project where the device size is reduce significantly due to mechanical constraint. Device wake-up achieved through the simple motion detected by the accelerometer.
Requirements:
- BLE communication interface for device configuration,
- UV Light sensing,
- Motion detection,
- Low power profile and power supply via CR2450.
Major components:
- nRF51822
- ADXL362
- SI1133
- PCF8563
Number of PCB layers: 4
BOM price: 35 USD
Realization time: 10 weeks
